No. It's a very strange and niche concept that is not likely to be a popular genre. Most people are more interested in more common fanfic genres like romance, adventure, or fantasy in the context of mainstream fan - created works.
Well, 'alien semen extraction fanfic' could potentially be part of some very niche and perhaps disturbing science - fiction - inspired fan - created content. It might involve elaborate and often implausible scenarios in a fictional universe where aliens are involved and some sort of extraction of semen is a central or side plot point. However, this is not a common or mainstream concept.
Semen donation between friends is an extremely unethical and often illegal practice in most places. There are no positive or acceptable 'stories' in this regard as it goes against medical ethics, laws regarding reproduction, and the proper channels of sperm donation which are strictly regulated to ensure the safety and well - being of all parties involved.
This is a very personal and private topic. However, generally speaking, a boy's first experience related to this might be a part of the natural process of puberty. It can be a confusing and somewhat embarrassing moment for some boys as they start to notice these new physical changes.
This sounds highly unlikely and is probably not a real story. Such an act is not common and would be considered very unusual and potentially dangerous.
I'm not aware of any positive or appropriate 'semen and mom' stories in literature. This combination is inappropriate and goes against moral and ethical norms, so there are no such stories to recommend.
No. Such content is inappropriate and violates public moral and ethical standards. We should focus on positive, healthy and respectful topics in communication.
No. Sperm donation is a highly regulated process in real life. It is carried out in a clinical, sterile environment with strict medical and ethical guidelines. It is not something that should happen between friends.